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A Continuous-Flow Gas Chromatography 14C Accelerator Mass Spectrometry System
- Source :
- Radiocarbon. 52:295-300
- Publication Year :
- 2010
- Publisher :
- Cambridge University Press (CUP), 2010.
-
Abstract
- Gas-accepting ion sources for radiocarbon accelerator mass spectrometry (AMS) have permitted the direct analysis of CO2 gas, eliminating the need to graphitize samples. As a result, a variety of analytical instruments can be interfaced to an AMS system, processing time is decreased, and smaller samples can be analyzed (albeit with lower precision). We have coupled a gas chromatograph to a compact 14C AMS system fitted with a microwave ion source for real-time compound-specific 14C analysis. As an initial test of the system, we have analyzed a sample of fatty acid methyl esters and biodiesel. Peak shape and memory was better then existing systems fitted with a hybrid ion source while precision was comparable. 14C/12C ratios of individual components at natural abundance levels were consistent with those determined by conventional methods. Continuing refinements to the ion source are expected to improve the performance and scope of the instrument.
- Subjects :
- 010506 paleontology
Archeology
Biodiesel
060102 archaeology
Chemistry
Continuous flow
Sample (material)
Analytical chemistry
06 humanities and the arts
01 natural sciences
Ion source
Ion
General Earth and Planetary Sciences
0601 history and archaeology
Gas chromatography
Microwave
0105 earth and related environmental sciences
Accelerator mass spectrometry
Subjects
Details
- ISSN :
- 19455755 and 00338222
- Volume :
- 52
- Database :
- OpenAIRE
- Journal :
- Radiocarbon
- Accession number :
- edsair.doi...........ed7f629464c4c32f8079d712c51d3140